dailysudoku.com Forum Index dailysudoku.com
Discussion of Daily Sudoku puzzles
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Puzzle 10/02/12 *** Salsa ***

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Puzzles by daj
View previous topic :: View next topic  
Author Message
daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Fri Feb 12, 2010 10:06 pm    Post subject: Puzzle 10/02/12 *** Salsa *** Reply with quote
Rated XY and BBDB+++

Code:
 +-----------------------+
 | 1 . 8 | 3 . 4 | . 9 2 |
 | . 2 . | . 6 . | 7 8 . |
 | 9 . . | . 7 . | 4 . . |
 |-------+-------+-------|
 | 7 . . | 1 . . | . 4 . |
 | . 4 9 | . 3 . | . . . |
 | 2 . . | . . 8 | . . . |
 |-------+-------+-------|
 | . 6 2 | . . . | 1 . . |
 | 4 1 . | 6 . . | . . . |
 | 8 . . | . . . | . . . |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
Back to top
View user's profile Send private message
daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sun Feb 14, 2010 5:09 pm    Post subject: Reply with quote
This puzzle probably qualifies as extremely difficult. Unless someone says they're still working on it, I'm going to delete this thread and treat it as a mistake.

Regards, Danny
Back to top
View user's profile Send private message
Wendy W



Joined: 04 Feb 2008
Posts: 144
PostPosted: Sun Feb 14, 2010 9:16 pm    Post subject: Reply with quote
Hi Danny, I found a type 1 UR on 35 and then hit the wall. I fear it's beyond me!
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Mon Feb 15, 2010 5:56 am    Post subject: Reply with quote
Quote:
*** Salsa ***

Is this named after the sauce or the music?

Actually, I found this to be a very enjoyable BBDB. I used 10 moves, some of which may not have been necessary, but none of which were anything outside of an ordinary arsenal.

Remote Pairs (35), ERs (2,2), two simple colorings (3,3), flightless W-Wing (35) with pincer transport, XY-Wing (395), XY-Wing (375), W-Wing (28) and XYZ-Wing (239).
Back to top
View user's profile Send private message
daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Mon Feb 15, 2010 11:50 am    Post subject: Reply with quote
Marty R. wrote:
Quote:
*** Salsa ***

Is this named after the sauce or the music?

Actually, I found this to be a very enjoyable BBDB. I used 10 moves, some of which may not have been necessary, but none of which were anything outside of an ordinary arsenal.

Remote Pairs (35), ERs (2,2), two simple colorings (3,3), flightless W-Wing (35) with pincer transport, XY-Wing (395), XY-Wing (375), W-Wing <28> and XYZ-Wing (239).

Congratulations Marty on cracking this puzzle Exclamation

I haven't used Salsa in the title since April of last year. I chose it because of my memories of having Mexican food in "Old Town" Albuquerque, New Mexico many years past. The plates there had to have asbestos liners -- even the salsa. Very Happy
Back to top
View user's profile Send private message
Wendy W



Joined: 04 Feb 2008
Posts: 144
PostPosted: Mon Feb 15, 2010 2:52 pm    Post subject: Reply with quote
Whoo-hoo, Marty! Well done.
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Mon Feb 15, 2010 4:43 pm    Post subject: Reply with quote
Wendy W wrote:
Whoo-hoo, Marty! Well done.

Thank you.

"Even a blind pig finds an acorn once in a while." Laughing
Back to top
View user's profile Send private message
cgordon



Joined: 04 May 2007
Posts: 769
Location: ontario, canada
PostPosted: Mon Feb 15, 2010 7:22 pm    Post subject: Reply with quote
Marty wrote
Quote:
Actually, I found this to be a very enjoyable BBDB. I used 10 moves, some of which may not have been necessary, but none of which were anything outside of an ordinary arsenal.
Remote Pairs (35), ERs (2,2), two simple colorings (3,3), flightless W-Wing (35) with pincer transport, XY-Wing (395), XY-Wing (375), W-Wing (28) and XYZ-Wing (239).

Flightless W-Wings with pincer transports are outside of my arsenal. So far I have used 5 ERs and several xyz and xy wings plus a huge number of eliminations with colouring on <5>. I am almost there - one triple and one quad left. But the coup-de-grace is elusive.

Happy Family Day.
Back to top
View user's profile Send private message
daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Mon Feb 15, 2010 8:01 pm    Post subject: Reply with quote
cgordon wrote:
Flightless W-Wings with pincer transports are outside of my arsenal. So far I have used 5 ERs and several xyz and xy wings plus a huge number of eliminations with colouring on <5>. I am almost there - one triple and one quad left. But the coup-de-grace is elusive.

Happy Family Day.

You don't need anthing flightless/extended/pseudo-anything on this puzzles. But it's okay if you use them.

Since you're past the XYZ-Wing(s) in the middle of the solution, then you're probably missing the final W-Wing.

I'll post my solver's solution tomorrow, unless someone asks me to hold off.
Back to top
View user's profile Send private message
cgordon



Joined: 04 May 2007
Posts: 769
Location: ontario, canada
PostPosted: Mon Feb 15, 2010 8:50 pm    Post subject: Reply with quote
I only take W-wings out the arsenal in extreme emergencies. But still can't see the finish. Maybe I erred up on the way.


Code:
            
+-------+----------+------------+   
| 1 7 8 |  3   5 4 |  6   9   2 |   
| 5 2 4 |  9   6 1 |  7   8   3 |   
| 9 3 6 |  8   7 2 |  4   5   1 |   
+-------+----------+------------+   
| 7 8 3 |  1  29 6 | 29   4   5 |   
| 6 4 9 | 27   3 5 | 28   1  78 |   
| 2 5 1 | 47  49 8 | 39  36  679|   
+-------+--------- +------------+   
| 3 6  2|  5 48  9 | 1    7   4 |   
| 4 1 57|  6 28 37 | 3589 23 89 |   
| 8 9 57| 24  1 37 | 35   26 46 |
+-------+----------+------------+
Back to top
View user's profile Send private message
arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Mon Feb 15, 2010 9:59 pm    Post subject: Reply with quote
After a long stuggle I got it down to five steps within the given rules. Very Happy
**Edit88 six steps due to a boo boo Embarassed

kite2
skyscraper 3
w-wing 53
xy-wing 593
xy-wing 395
w-wing 82

Last edited by arkietech on Tue Feb 16, 2010 1:14 am; edited 1 time in total
Back to top
View user's profile Send private message
cgordon



Joined: 04 May 2007
Posts: 769
Location: ontario, canada
PostPosted: Mon Feb 15, 2010 10:56 pm    Post subject: Reply with quote
Quote:
w-wing 82

Thank you
By my reckoning that was 15 steps but as Frank and the King said:
"I did it my way."

Last edited by cgordon on Mon Feb 15, 2010 10:57 pm; edited 1 time in total
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Mon Feb 15, 2010 10:57 pm    Post subject: Reply with quote
cgordon wrote:
I only take W-wings out the arsenal in extreme emergencies. But still can't see the finish. Maybe I erred up on the way.


Code:
            
+-------+----------+------------+   
| 1 7 8 |  3   5 4 |  6   9   2 |   
| 5 2 4 |  9   6 1 |  7   8   3 |   
| 9 3 6 |  8   7 2 |  4   5   1 |   
+-------+----------+------------+   
| 7 8 3 |  1  29 6 | 29   4   5 |   
| 6 4 9 | 27   3 5 | 28   1  78 |   
| 2 5 1 | 47  49 8 | 39  36  679|   
+-------+--------- +------------+   
| 3 6  2|  5 48  9 | 1    7   4 |   
| 4 1 57|  6 28 37 | 3589 23 89 |   
| 8 9 57| 24  1 37 | 35   26 46 |
+-------+----------+------------+

Craig, Unless there's an error in your grid, there are eliminations to be made based on the 4 in r7c9.
Back to top
View user's profile Send private message
cgordon



Joined: 04 May 2007
Posts: 769
Location: ontario, canada
PostPosted: Mon Feb 15, 2010 10:59 pm    Post subject: Reply with quote
Marty ... Yes sorry that should have been two 48s on Row 7.
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Tue Feb 16, 2010 12:13 am    Post subject: Reply with quote
cgordon wrote:
Marty ... Yes sorry that should have been two 48s on Row 7.

How about the potential DP 35-37-57 in boxes 789? R8c7 must be 8 or 9, combining with r8c9 to make an 89 naked pair.
Back to top
View user's profile Send private message
daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Tue Feb 16, 2010 11:20 am    Post subject: Reply with quote
Code:
 r4c4    2-String Kite                   <> 2    r9c7

 r2c2    2-String Kite (2x)              <> 35   r6c9        Remote Pair

 r27c1   Skyscraper                      <> 3    r3c8,r8c9

 r7c6    2-String Kite                   <> 7    r5c8

 <39+5>  XYZ-Wing r6c7/r4c9+r6c2         <> 5    r6c8
 <39+5>  XYZ-Wing r6c7/r4c9+r9c7         <> 5    r45c7

 r4c2    2-String Kite                   <> 5    r3c9

 r3c1    2-String Kite                   <> 5    r7c8

 <37+5>  XY-Wing  r7c8/r7c4+r9c7         <> 5    r9c6

 <57+3>  XY-Wing  r7c4/r7c1+r9c6         <> 3    r9c3

 r49c3   Skyscraper                      <> 5    r6c7,r8c9

 W-Wing: (8=2)r5c7 - r5c4 = r4c5 - (2=8)r8c5  =>  r8c7<>8
 +--------------------------------------------------------------+
 |  1     7     8     |  3     5     4     |  6     9     2     |
 |  5     2     4     |  9     6     1     |  7     8     3     |
 |  9     3     6     |  8     7     2     |  4     5     1     |
 |--------------------+--------------------+--------------------|
 |  7     8     3     |  1    %29    6     |  29    4     5     |
 |  6     4     9     | %27    3     5     | *28    1     78    |
 |  2     5     1     |  47    49    8     |  39    36    679   |
 |--------------------+--------------------+--------------------|
 |  3     6     2     |  5     48    9     |  1     7     48    |
 |  4     1     57    |  6    *28    37    |  359-8 23    89    |
 |  8     9     57    |  24    1     37    |  35    26    46    |
 +--------------------------------------------------------------+
 # 27 eliminations remain
Back to top
View user's profile Send private message
oaxen



Joined: 10 Jul 2006
Posts: 96
PostPosted: Tue Feb 16, 2010 11:16 pm    Post subject: Reply with quote
"2" on r8c5 makes it a one stepper
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Puzzles by daj All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group